分别滴定法测定工业氯磺酸含量  

Determination of Industrial chlorosulfonic acid content by fhe differentiate method of titration

作　　者：郑学根 史英俊 ZHENG Xuegen;SHI Yingjun(Zhejiang Juhua Co.,Ltd.Sulphuric Acid Plant,Quzhou Zhejiang,324004)

机构地区：[1]浙江巨化股份有限公司硫酸厂,浙江衢州324004

出　　处：《化工生产与技术》2021年第1期16-17,39,I0003,共4页Chemical Production and Technology

摘　　要：针对现行GB/T 13549-2016的工业氯磺酸含量分析方法中,存在的由2次滴定使用同1只试样,操作要求较高、溶液耗用量受到限制,系统误差难以消除的问题,研究采用电位法指示终点的分别滴定法。结果表明,分别对2只试样进行总酸和氯化氢测定,氯磺酸质量分数绝对差的平均为0.06,明显小于GB/T 13549-2016平行测定结果绝对差平均的0.36。与现行标准中的方法相比,分别滴定法的操作独立性强,可有效降低检测结果的系统误差,在日常检验过程中出现分析结果异常时可参考使用。As the problems of current method of GB/T 13549-2016,which is for analysis industrial chlorosulfonic acid concentration were hardly solved,differentiate titration method was proposed in this article.The results showed the average absolute deviation of chlorsulfonic acid mass fraction was about 0.06 through detecting two samples with total acidity and hydrogen chloride respectively.Which was less than the result of 0.36 by using GB/T 13549-2016.The differentiate titration method shows adbantages in operational independence,less systematic error.Therefore,this method could be adopted when the analysis results are abnormal in the daily inspecton process.

关 键 词：氯磺酸 含量 分别滴定法 

分 类 号：O655.22[理学—分析化学]